Segmentation fault (core dumped) AttributeError: 'InDegreeView' object has no attribute 'get'

[zuozijiZHOULI]

./train_LINE.sh: line 14: 13751 Segmentation fault (core dumped) ./concatenate -input1 vec_1st.txt -input2 vec_2nd.txt -output ${2} -binary 1 /usr/lib64/python2.7/site-packages/sklearn/cross_validation.py:41: DeprecationWarning: This module was deprecated in version 0.18 in favor of the model_selection module into which all the refactored classes and functions are moved. Also note that the interface of the new CV iterators are different from that of this module. This module will be removed in 0.20. "This module will be removed in 0.20.", DeprecationWarning) 正在抽取特征... [nltk_data] Downloading package punkt to /root/nltk_data... [nltk_data] Package punkt is already up-to-date! [nltk_data] Downloading package stopwords to /root/nltk_data... [nltk_data] Package stopwords is already up-to-date! Traceback (most recent call last): File "test.py", line 167, in train_xs=get_features(train_df) File "test.py", line 112, in get_features set_feature('in_degree_target',in_degree.get(row.tid,0)) AttributeError: 'InDegreeView' object has no attribute 'get'